液相色谱-电化学法检测食品中甲醛合次硫酸氢钠  

Inspection of Sodium Formaldehyde Sulfoxylate in Food by Liquid Chromatography with Electrochemical Detection

作　　者：钱疆 卢声宇 黄杰 蓝锦昌 张玉燕 

机构地区：[1]福建检验检疫局,福州350001

出　　处：《理化检验（化学分册）》2009年第2期158-160,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：福建检验检疫局科技项目资助(FK2002-29)

摘　　要：根据离子特性及电化学活性的研究，提出了离子色谱-电化学法定性检测甲醛合次硫酸氢钠（CH2O·HSO2^-·Na^＋）。对温度及酸度对分析物稳定性的影响作了试验并进行讨论。在定量检验时，回收率达到90％-96％之间，测定结果的相对标准偏差（n=5）均小于4％。Based on the study of ionic characteristic and electrochemical activity, a method of ionchromatography with amperometric detection for qualitative detection of sodium formaldehyde sulfoxylate （CH2O· HSO2^-· Na^＋） was proposed. Effects of temperature and acidity on the stability of the analyte were tested and discussed. In the quantitative testing, values of recovery found were ranged from 90% to 96%. Values of RSD＇s （n=5） calculated from the analytical results were all less than 4%.

关 键 词：液相色谱 电化学检测 甲醛合次硫酸氢钠 吊白块 

分 类 号：O657.1[理学—分析化学]